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Then the damage evolution equation used to describe concrete materials could be fitted.
Introduction Concrete is a kind of engineering materials which used widespread, except under static loading, inevitable but also is acted by earthquake, explosion etc.
For concrete materials without damage , the stress-strain relationship in elastic stage(Within the scope of 30%) is: (1) For concrete materials with damage, in the same load, elastic strain changes from to , the stress-strain relationship is : (2) May see from the formula (3), (4), , so damage factor can be expressed : (3) If measured the in the same load and is within the scope of elastic strain is the same with the nondestructive circumstances , then , specimen is alright.
Beijing: Science Press, 1998, 7-47) [3] Burlion N, Gatuingt F: Compaction and tensile damage in concrete: constitutive modelling and application to dynamics (Comput Methods Appl.
Strain-rate-sensitive constitutive law for concrete (Journal of Engineering Mechanics, 1999, 125(12):1411-1420) [5] WangDaoRong, HuShiSheng: Shock damage evolution regularity of concrete material research(Rock mechanics and engineering, 2003, 22(2):223-226) [6] XiaoShiYun: TianZiKun concrete uniaxial tensile tests of dynamic damage (Journal of civil engineering, 2008, 41 (7) : 14-20)

Materials science and technology, 1996, 12.11: 955-962
Materials Science and Engineering: A 766 (2019): 138360
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Conventional Friction Stir Welding (FSW) is that weld materials are joint at room temperature by stirring softened materials due to frictional heat of rotating tool.
In this case the test was carried out with no defective welded materials.
Fig.8 Comparing the tensile strength in welded materials by FSW with heating at 150 o C and 300 o C, and base materials.
Besides, the strength of non-heating welded material was equivalent to these welded materials.
Thomas: Welding Journal Vol. 75-3 (1996), p. 41-45

Methods of electron crystallography as tools for materials analysis W.
New methods of electron crystallography, particularly modern methods of electron diffraction have opened new strategies for the structure analysis of nanostructured materials and materials systems.
Meerschaut: Misfit layer compounds (MS)nTS2 (M=Sn, Pb, Bi, rare earth metals; T=Nb, Ta, Ti, V, Cr;1.08Materials Science Forum 100-101 (1992) 101 – 172
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Materials Properties Investigating different materials and additives for improving the structural behaviour of two joist slabs has been an attractive topic for many years.
Rameshwaran, "Behaviour of waffle slab," Materials Today: Proceedings, vol. 46, pp. 3765-3768, 2021
Mohd Hashim, "Structural Effect of Using Steel Fiber Reinforcement on the Punching Shear of Self-Compacting Fiber Reinforced Concrete (SCFRC) Ribbed Slabs," in Materials Science Forum, 2019, vol. 972: Trans Tech Publ, pp. 99-104
Rahman, "Flexural performance of full and partially steel fibre reinforced self-compacting concrete (SCFRC) ribbed slab," in IOP Conference Series: Materials Science and Engineering, 2019, vol. 615, no. 1: IOP Publishing, p. 012094
Pakrastins, "Numerical Comparison of HPFRC and HPC Ribbed Slabs," in IOP Conference Series: Materials Science and Engineering, 2019, vol. 660, no. 1: IOP Publishing, p. 012054

Consumption of materials.
Materials were always widely needed for various industries, especially for the engineering project.
All these materials were natural resources or its variant, so directly or indirectly the consumption of materials was connected with the extent of constrution project impacted on environment.
Chinese Journal of Underground Space and Engineering.
Climate Change 2007: The Physical Science Basis.

Abdallah: submitted to Journal of Applied and Industrial Sciences, 1(3), 78–88 (2013) [3] G.
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Barrett: submitted to Journal of the Science of Food and Agriculture (2007) [13] Y.
Rodhi: submitted to Advanced Materials Research, 1113, 267–272. (2015)

It also has nothing to do with the types of specimen materials and the experiments.
It also has nothing to do with the types of specimen materials and the experiments.
Experiment of materials mechanics.
Mechanics of materials.
Mechanics of materials.

The formulas in the paper have significance in exerting material potential and save material.
Through numerous tests on rock, the existence of the intermediate principal stress effect has now been well recognized as characteristics of the materials [4] [5].
The theory is especially versatile in reflecting effect to different extents for different materials.
Shosuke, et al: Journal of Structural Engineering, Vol.130(2004), p.180-188
[7] Xiaorong Hu, Taiqing Lin:The Chinese Journal of Nonferrous Metals.Vol. 17(2007) ,p.207-215.

IOP Conference Series: Materials Science and Engineering. 1036, 1 (2021) [6] M.A.
Rosemary oil as a Corrosion Inhibitor on High Carbon Steel in Citric Acid and Sodium Chloride: Weight Loss Study, IOP Conference Series: Materials Science and Engineering. 1107, 1(2021)
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Passive characteristics and Arrhenius responses of expired inhibitor drug on UNG1050 steel, IOP Conference Series: Materials Science and Engineering.1107, 1 (2021)
Mwakalesi, Corrosion inhibition of amino pentadecylphenols (APPs) derived from cashew nut shell liquid on mild steel in acidic medium, Materials Sciences and Applications. 7, 8 (2016) 396-402.